42040206071 has 2 divisors, whose sum is σ = 42040206072. Its totient is φ = 42040206070.

The previous prime is 42040206067. The next prime is 42040206107. The reversal of 42040206071 is 17060204024.

Together with next prime (42040206107) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42040206071 - 2² = 42040206067 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42040206071.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42040203071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21020103035 + 21020103036.

It is an arithmetic number, because the mean of its divisors is an integer number (21020103036).

Almost surely, 2^42040206071 is an apocalyptic number.

42040206071 is a deficient number, since it is larger than the sum of its proper divisors (1).

42040206071 is an equidigital number, since it uses as much as digits as its factorization.

42040206071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 26.

The spelling of 42040206071 in words is "forty-two billion, forty million, two hundred six thousand, seventy-one".